(19)
(11) EP 1 635 532 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.07.2006 Bulletin 2006/30

(43) Date of publication A2:
15.03.2006 Bulletin 2006/11

(21) Application number: 05019217.8

(22) Date of filing: 21.06.2001
(51) International Patent Classification (IPC): 
H04L 29/06(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.06.2000 US 603108

(62) Application number of the earlier application in accordance with Art. 76 EPC:
03027277.7 / 1411698
01948643.0 / 1297676

(71) Applicant: APPLE COMPUTER, INC.
Cupertino, CA 95014 (US)

(72) Inventors:
  • Serenyi, Denis
    Menlo Park, CA 94025 (US)
  • Lecroy, Chris
    Boulder Creek, CA 95006 (US)

(74) Representative: Jehle, Volker Armin et al
Bosch Graf von Stosch Jehle Patentanwaltsgesellschaft mbH Flüggenstrasse 13
80639 München
80639 München (DE)

   


(54) Methods and apparatuses for transferring data


(57) The present invention provides several methods and apparatuses for transmitting multimedia data using streaming media protocols such as real-time transfer protocols (RTP) and real-time streaming protocols (RTSP) in a computer network environment. In one exemplary embodiment, a request for RTP data and its associated extension is sent from the caching proxy server to the server. The request may be for one specific type of data or multiple unrelated types of data. The server responds to the request indicating its support for the requested RTP extension data. The caching proxy server determines whether to proceed or terminate the data transmission process based on the response provided by the server. If it is determined to proceed with the data transmission process, the caching proxy informs the server to send the requested and supported RTP data. The server sends the requested data in a variable and extendible header format.







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